ticktack是什么意思_ticktack用英语怎么说_ticktack的翻译_ticktack翻译成_ticktack的中文意思_ticktack怎么读,ticktack的读音,ticktack的用法,ticktack的例句

1. system of signalling by hand signs used by bookmakers at racetracks

1. make a sound like a clock or a timer;

"the clocks were ticking"

"the grandfather clock beat midnight"